CN104979836A - Power grid reactive compensation method and system - Google Patents
Power grid reactive compensation method and system Download PDFInfo
- Publication number
- CN104979836A CN104979836A CN201510347950.6A CN201510347950A CN104979836A CN 104979836 A CN104979836 A CN 104979836A CN 201510347950 A CN201510347950 A CN 201510347950A CN 104979836 A CN104979836 A CN 104979836A
- Authority
- CN
- China
- Prior art keywords
- reactive power
- module
- grid
- logic analysis
- analysis module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
本发明公开了一种电网无功补偿方法及系统，该系统包括电压监控器和电流监控器、运算模块、逻辑分析模块、无功补偿器、反馈模块和人机交互模块；其中，电压监控器和电流监控器分别通过无线连接于运算模块，运算模块分别与逻辑分析模块和反馈模块相连接，逻辑分析模块分别与反馈模块、无功补偿器和人机交互模块相连接，无功补偿器与反馈模块相连接。通过使用本发明的电网无功补偿方法及系统，可以对用户终端级、子网级和全网级的三级无功功率分别进行控制补偿，实现了电网各个层级的功率因数的提高。
The invention discloses a reactive power compensation method and system for a power grid. The system includes a voltage monitor and a current monitor, an operation module, a logic analysis module, a reactive power compensator, a feedback module and a human-computer interaction module; wherein, the voltage monitor and the current monitor are respectively connected to the computing module through wireless, the computing module is connected with the logic analysis module and the feedback module respectively, the logic analysis module is connected with the feedback module, the reactive power compensator and the human-computer interaction module respectively, and the reactive power compensator is connected with the connected to the feedback module. By using the power grid reactive power compensation method and system of the present invention, three levels of reactive power at the user terminal level, the sub-network level and the whole network level can be controlled and compensated respectively, and the power factor of each level of the power grid can be improved.
Description
技术领域 technical field
本发明涉及电网节能技术领域，尤其是一种电网无功补偿方法及系统。 The invention relates to the technical field of power grid energy saving, in particular to a reactive power compensation method and system for a power grid.
背景技术 Background technique
随着国民经济的高速发展和人民生活水平的提高，人们对电力的需求日益增长，同时对供电的可靠性和供电质量提出了更高的要求。由于负荷的不断增加，以及电源的大幅增加，不但改变了电力系统的网络结构，也改变了系统的电源分布，造成系统的无功分布不尽合理，甚至可能造成局部地区无功严重不足、电压水平普遍较低的情况。 With the rapid development of the national economy and the improvement of people's living standards, people's demand for electricity is increasing, and at the same time, higher requirements are put forward for the reliability and quality of power supply. Due to the continuous increase of load and the substantial increase of power supply, not only the network structure of the power system has been changed, but also the power supply distribution of the system has been changed, resulting in unreasonable reactive power distribution of the system, and may even cause serious shortage of reactive power in some areas. generally low levels.
电压质量是电力系统电能质量的重要指标之一，它的好坏主要取决于电力系统无功补偿是否合理。但由于电网系统庞大，无功功率的种类和分布极其复杂，这就给电网的无功补偿提出了很大的难题。如何针对不同的情况快速做出不同的无功补偿措施，一直是本领域研究的热点和难点。 Voltage quality is one of the important indicators of power quality in the power system, and its quality mainly depends on whether the reactive power compensation of the power system is reasonable. However, due to the huge power grid system, the types and distribution of reactive power are extremely complex, which poses a great problem to the reactive power compensation of the power grid. How to quickly make different reactive power compensation measures for different situations has always been a hot and difficult point of research in this field.
发明内容 Contents of the invention
本发明要解决的技术问题是提供一种电网无功补偿方法及系统，能够针对不同类型的无功功率，自动使用不同的策略进行无功补偿，并通过数据反馈进行策略修正，提高了电网各个层级的无功补偿效率，提升了功率因数。 The technical problem to be solved by the present invention is to provide a reactive power compensation method and system for the power grid, which can automatically use different strategies for reactive power compensation for different types of reactive power, and perform strategy correction through data feedback, thereby improving the efficiency of each power grid. The level of reactive power compensation efficiency improves the power factor.
为解决上述技术问题，本发明所采取的技术方案是： In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
一种电网无功补偿方法，包括如下步骤： A method for power grid reactive power compensation, comprising the steps of:
A、利用布设在各电网监测点的电压监控器和电流监控器，实时收集该电网监测点的电压值和电流值，并将采集到的电压值和电流值发送到运算模块； A. Utilize the voltage monitor and current monitor arranged at each grid monitoring point to collect the voltage value and current value of the grid monitoring point in real time, and send the collected voltage value and current value to the computing module;
B、运算模块将接收到的各电网监测点的电压值和电流值进行存储，并将存储的数据定时进行运算，得到平均功率因数数据并发送至逻辑分析模块； B. The calculation module stores the received voltage and current values of each grid monitoring point, and regularly calculates the stored data to obtain the average power factor data and send it to the logic analysis module;
C、逻辑分析模块将步骤B中的平均功率因数进行综合分类，并根据分类结果生成不同的控制策略，该生成的控制策略施加于无功补偿器以进行无功补偿； C. The logic analysis module comprehensively classifies the average power factor in step B, and generates different control strategies according to the classification results, and the generated control strategies are applied to the reactive power compensator for reactive power compensation;
D、反馈模块将无功补偿后的平均功率因数与步骤B中发送至逻辑分析模块中的无功补偿前的平均功率因数进行比较，并根据该比较结果对逻辑分析模块施加于无功补偿器的控制策略进行修正； D. The feedback module compares the average power factor after reactive power compensation with the average power factor before reactive power compensation sent to the logic analysis module in step B, and applies the logic analysis module to the reactive power compensator according to the comparison result The control strategy is revised;
E、人机交互模块分别将步骤C中逻辑分析模块做出的分类结果和步骤D中逻辑分析模块做出的对无功补偿器的控制策略进行显示，如果监控人员发现该控制策略出现错误，即通过人机交互模块手动修正对无功补偿器的控制策略。 E. The human-computer interaction module displays the classification results made by the logic analysis module in step C and the control strategy for the reactive power compensator made by the logic analysis module in step D. If the monitoring personnel find that the control strategy is wrong, That is, manually modify the control strategy of the reactive power compensator through the human-computer interaction module.
进一步的，步骤B中，运算模块每1分钟对储存的数据进行一次运算，得出一个平均功率因数数据。 Further, in step B, the operation module performs an operation on the stored data every 1 minute to obtain an average power factor data.
进一步的，步骤C中，逻辑分析模块对平均功率因数进行综合分类包括以下步骤： Further, in step C, the comprehensive classification of the average power factor by the logic analysis module includes the following steps:
C-1、将来源于同一监测点的平均功率因数定义为用户终端级平均功率因数； C-1. Define the average power factor from the same monitoring point as the average power factor at the user terminal level;
C-2、将每个用户终端容量与其所在配电变压器容量的比值定义为该用户终端的加权因子，同一配电变压器下所有的加权因子相加之和等于1，将来源于同一配电变压器的用户终端级平均功率因数乘以其相应的加权因子之后的平均值定义为子网级平均功率因数； C-2. Define the ratio of the capacity of each user terminal to the capacity of the distribution transformer where it is located as the weighting factor of the user terminal. The sum of all weighting factors under the same distribution transformer is equal to 1, which will come from the same distribution transformer The average value of the user terminal level average power factor multiplied by its corresponding weighting factor is defined as the subnetwork level average power factor;
C-3、将每个子网容量与全网容量的比值定义为该子网的加权因子，所有的子网加权因子相加之和等于1，将全网的子网级平均功率因数乘以其相应的加权因子之后的平均值定义为全网级平均功率因数。 C-3. Define the ratio of the capacity of each subnetwork to the capacity of the whole network as the weighting factor of the subnetwork. The sum of all weighting factors of the subnetwork is equal to 1. Multiply the average power factor of the subnetwork level of the whole network by its The average value after the corresponding weighting factors is defined as the average power factor of the whole network level.
进一步的，针对用户终端级的无功功率，启动并联电容器或串联电容器或并联电抗器进行无功补偿；针对子网级的无功功率，启动并联电容器或串联电容器或并联电抗器或静止补偿器进行无功补偿；针对全网级的无功功率，启动同步调相机或静止补偿器或有源滤波器进行无功补偿。 Further, for reactive power at the user terminal level, start shunt capacitors or series capacitors or shunt reactors for reactive compensation; for reactive power at the sub-network level, start shunt capacitors or series capacitors or shunt reactors or static compensators Perform reactive power compensation; for the reactive power of the entire network level, start a synchronous condenser or static compensator or active filter for reactive power compensation.
进一步的，步骤D中，反馈模块采用PID算法修正逻辑分析模块对无功补偿器的控制策略。 Further, in step D, the feedback module uses the PID algorithm to modify the control strategy of the logic analysis module for the reactive power compensator.
一种电网无功补偿系统，包括电压监控器和电流监控器、运算模块、逻辑分析模块、无功补偿器、反馈模块和人机交互模块；其中，电压监控器和电流监控器分别通过无线连接于运算模块，运算模块分别与逻辑分析模块和反馈模块相连接，逻辑分析模块分别与反馈模块、无功补偿器和人机交互模块相连接，无功补偿器与反馈模块相连接；每个电网监测点均布设有一对电压监控器和电流监控器，分别用于采集该电网监测点的电压值和电流值并发送至运算模块；运算模块用于将接收到的各电网监测点的电压值和电流值进行平均功率因数计算并将计算出的平均功率因数发送至逻辑分析模块；逻辑分析模块将接收到的平均功率因数进行综合分类，并根据分类结果产生用于控制无功补偿器工作的控制策略；无功补偿器用于执行该控制策略，对无功功率进行补偿；反馈模块用于对补偿后的电网功率因数与补偿前的平均功率因数进行比较并根据比较结果指导逻辑分析模块修正施加于无功补偿器的控制策略；人机交互模块用于实时显示逻辑分析模块做出的分类结果和施加于无功补偿器的控制策略，并对错误的控制策略进行手动修正。 A reactive power compensation system for a power grid, including a voltage monitor and a current monitor, an operation module, a logic analysis module, a reactive power compensator, a feedback module, and a human-computer interaction module; wherein the voltage monitor and the current monitor are respectively connected via wireless In the calculation module, the calculation module is connected with the logic analysis module and the feedback module respectively, the logic analysis module is connected with the feedback module, the reactive power compensator and the human-computer interaction module respectively, and the reactive power compensator is connected with the feedback module; each power grid A pair of voltage monitors and current monitors are evenly distributed at the monitoring points, which are used to collect the voltage value and current value of the grid monitoring point and send them to the calculation module; the calculation module is used to receive the voltage value and current value of each grid monitoring point Calculate the average power factor of the current value and send the calculated average power factor to the logic analysis module; the logic analysis module comprehensively classifies the received average power factor, and generates a control for controlling the work of the reactive power compensator according to the classification result strategy; the reactive power compensator is used to implement the control strategy to compensate reactive power; the feedback module is used to compare the compensated grid power factor with the average power factor before compensation and guide the logic analysis module to correct the The control strategy of the reactive power compensator; the human-computer interaction module is used to display the classification results made by the logic analysis module and the control strategy applied to the reactive power compensator in real time, and manually correct the wrong control strategy.
进一步的，所述电压监控器、电流监控器和运算模块中分别设置有无线通讯机构。 Further, wireless communication mechanisms are respectively set in the voltage monitor, the current monitor and the computing module.
进一步的，所述无线通讯机构为远距离无线网桥。 Further, the wireless communication mechanism is a long-distance wireless network bridge.
进一步的，所述无功补偿器包括同步调相机、并联电容器、串联电容器、并联电抗器、静止补偿器和有源滤波器。 Further, the reactive power compensator includes a synchronous condenser, a shunt capacitor, a series capacitor, a shunt reactor, a static compensator and an active filter.
采用上述技术方案所产生的有益效果在于： The beneficial effects produced by adopting the above-mentioned technical scheme are:
通过使用本发明的电网无功补偿方法及系统，可以对用户终端级、子网级和全网级的三级无功功率分别进行控制补偿，实现了电网各个层级的功率因数的提高，实验数据见下表： By using the power grid reactive power compensation method and system of the present invention, the three-level reactive power of the user terminal level, the sub-network level and the whole network level can be controlled and compensated respectively, and the power factor of each level of the power grid has been improved. Experimental data See the table below:
①仅对用户终端级无功功率进行补偿 ①Only compensate the reactive power at the user terminal level
②仅对子网级无功功率进行补偿 ②Only compensate reactive power at sub-network level
③仅对全网级无功功率进行补偿 ③Only compensate reactive power at the whole network level
④对用户终端级、子网级和全网级的三级无功功率进行分别补偿 ④Respectively compensate the three-level reactive power at the user terminal level, sub-network level and whole network level
由上述实验数据可以看出，采用本发明的电网无功补偿方法及系统进行用户终端级、子网级和全网级的三级无功功率进行分别补偿后，电网各个层级的功率因数都有了显著的提高。 It can be seen from the above experimental data that after using the grid reactive power compensation method and system of the present invention to compensate the three-level reactive power at the user terminal level, the sub-network level and the whole network level respectively, the power factors of each level of the grid have significantly improved.
此外，本发明将取样时间优选为1分钟，既兼顾了取样的时效性，又避免了无功补偿器频繁启停，延长了无功补偿器的使用寿命。反馈模块采用PID算法，使系统每次的调整时间缩短了1倍。并且，本发明根据电网不同层级的无功功率的特点，选取不同的无功补偿器，降低了设备资金的投入量。 In addition, in the present invention, the sampling time is preferably 1 minute, which not only takes into account the timeliness of sampling, but also avoids frequent start and stop of the reactive power compensator, and prolongs the service life of the reactive power compensator. The feedback module adopts PID algorithm, which shortens the adjustment time of the system by one time. Moreover, the present invention selects different reactive power compensators according to the characteristics of reactive power at different levels of the power grid, thereby reducing the investment in equipment funds.
附图说明 Description of drawings
图1是本发明电网无功补偿系统的原理图。 Fig. 1 is a schematic diagram of the grid reactive power compensation system of the present invention.
具体实施方式 Detailed ways
下面结合附图和具体实施方式对本发明作进一步详细的说明。 The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
参看附图1，一种电网无功补偿系统，包括电压监控器和电流监控器、运算模块、逻辑分析模块、无功补偿器、反馈模块和人机交互模块；电压监控器、电流监控器和运算模块中分别设置有无线通讯机构，并且无线通讯机构可以为远距离无线网桥；其中，电压监控器和电流监控器分别通过无线连接于运算模块，运算模块分别与逻辑分析模块和反馈模块相连接，逻辑分析模块分别与反馈模块、无功补偿器和人机交互模块相连接，无功补偿器与反馈模块相连接；每个电网监测点均布设有一对电压监控器和电流监控器，分别用于采集该电网监测点的电压值和电流值并发送至运算模块；运算模块用于将接收到的各电网监测点的电压值和电流值进行平均功率因数计算并将计算出的平均功率因数发送至逻辑分析模块；逻辑分析模块将接收到的平均功率因数进行综合分类，并根据分类结果产生用于控制无功补偿器工作的控制策略；无功补偿器用于执行该控制策略，对无功功率进行补偿；反馈模块用于对补偿后的电网功率因数与补偿前的平均功率因数进行比较并根据比较结果指导逻辑分析模块修正施加于无功补偿器的控制策略；人机交互模块用于实时显示逻辑分析模块做出的分类结果和施加于无功补偿器的控制策略，并对错误的控制策略进行手动修正。无功补偿器包括同步调相机、并联电容器、串联电容器、并联电抗器、静止补偿器和有源滤波器。 Referring to accompanying drawing 1, a kind of grid reactive power compensation system comprises voltage monitor and current monitor, operation module, logic analysis module, reactive power compensator, feedback module and man-machine interaction module; Voltage monitor, current monitor and The computing modules are respectively provided with wireless communication mechanisms, and the wireless communication mechanisms can be long-distance wireless network bridges; wherein, the voltage monitor and the current monitor are respectively connected to the computing modules by wireless, and the computing modules are connected with the logic analysis module and the feedback module respectively. connection, the logic analysis module is respectively connected with the feedback module, reactive power compensator and human-computer interaction module, and the reactive power compensator is connected with the feedback module; each power grid monitoring point is equipped with a pair of voltage monitors and current monitors, respectively It is used to collect the voltage value and current value of the grid monitoring point and send it to the operation module; the operation module is used to calculate the average power factor of the received voltage value and current value of each grid monitoring point and calculate the average power factor sent to the logic analysis module; the logic analysis module will comprehensively classify the received average power factor, and generate a control strategy for controlling the work of the reactive power compensator according to the classification results; the reactive power compensator is used to implement the control strategy, and the reactive power The power is compensated; the feedback module is used to compare the power factor of the grid after compensation with the average power factor before compensation, and guide the logic analysis module to correct the control strategy applied to the reactive power compensator according to the comparison result; the human-computer interaction module is used for real-time Display the classification results made by the logic analysis module and the control strategy applied to the reactive power compensator, and manually correct the wrong control strategy. Reactive power compensators include synchronous condensers, shunt capacitors, series capacitors, shunt reactors, static compensators and active filters.
采用上述电网无功补偿系统进行电网无功补偿的方法步骤如下： The steps of the reactive power compensation method of the power grid using the above reactive power compensation system are as follows:
A、利用布设在各电网监测点的电压监控器和电流监控器，实时收集该电网监测点的电压值和电流值，并将采集到的电压值和电流值发送到运算模块； A. Utilize the voltage monitor and current monitor arranged at each grid monitoring point to collect the voltage value and current value of the grid monitoring point in real time, and send the collected voltage value and current value to the computing module;
B、运算模块将接收到的各电网监测点的电压值和电流值进行存储，并将存储的数据定时进行运算，如每1分钟对储存的数据进行一次运算，得出一个平均功率因数数据，然后运算模块将计算得到平均功率因数数据并发送至逻辑分析模块； B. The calculation module stores the received voltage and current values of each power grid monitoring point, and calculates the stored data regularly, such as performing calculations on the stored data every 1 minute to obtain an average power factor data. Then the calculation module will calculate the average power factor data and send it to the logic analysis module;
C、逻辑分析模块将步骤B中的平均功率因数进行综合分类，并根据分类结果生成不同的控制策略，该生成的控制策略施加于无功补偿器以进行无功补偿； C. The logic analysis module comprehensively classifies the average power factor in step B, and generates different control strategies according to the classification results, and the generated control strategies are applied to the reactive power compensator for reactive power compensation;
步骤C中，逻辑分析模块对平均功率因数进行综合分类具体包括以下步骤： In step C, the logical analysis module comprehensively classifies the average power factor, specifically including the following steps:
C-1、将来源于同一监测点的平均功率因数定义为用户终端级平均功率因数； C-1. Define the average power factor from the same monitoring point as the average power factor at the user terminal level;
C-2、将每个用户终端容量与其所在配电变压器容量的比值定义为该用户终端的加权因子，同一配电变压器下所有的加权因子相加之和等于1，将来源于同一配电变压器的用户终端级平均功率因数乘以其相应的加权因子之后的平均值定义为子网级平均功率因数； C-2. Define the ratio of the capacity of each user terminal to the capacity of the distribution transformer where it is located as the weighting factor of the user terminal. The sum of all weighting factors under the same distribution transformer is equal to 1, which will come from the same distribution transformer The average value of the user terminal level average power factor multiplied by its corresponding weighting factor is defined as the subnetwork level average power factor;
C-3、将每个子网容量与全网容量的比值定义为该子网的加权因子，所有的子网加权因子相加之和等于1，将全网的子网级平均功率因数乘以其相应的加权因子之后的平均值定义为全网级平均功率因数。 C-3. Define the ratio of the capacity of each subnetwork to the capacity of the whole network as the weighting factor of the subnetwork. The sum of all weighting factors of the subnetwork is equal to 1. Multiply the average power factor of the subnetwork level of the whole network by its The average value after the corresponding weighting factors is defined as the average power factor of the whole network level.
步骤C中，具体的控制策略为： In step C, the specific control strategy is:
针对用户终端级的无功功率，启动并联电容器或串联电容器或并联电抗器进行无功补偿；针对子网级的无功功率，启动并联电容器或串联电容器或并联电抗器或静止补偿器进行无功补偿；针对全网级的无功功率，启动同步调相机或静止补偿器或有源滤波器进行无功补偿。 For the reactive power at the user terminal level, start shunt capacitors or series capacitors or shunt reactors for reactive power compensation; for reactive power at the sub-network level, start shunt capacitors or series capacitors or shunt reactors or static compensators for reactive power compensation Compensation: For the reactive power of the whole network level, start the synchronous condenser or static compensator or active filter to perform reactive power compensation.
D、反馈模块将无功补偿后的平均功率因数与步骤B中发送至逻辑分析模块中的无功补偿前的平均功率因数进行比较，并根据该比较结果采用PID算法对逻辑分析模块施加于无功补偿器的控制策略进行修正； D. The feedback module compares the average power factor after reactive power compensation with the average power factor before reactive power compensation sent to the logic analysis module in step B, and uses the PID algorithm to apply the logic analysis module to the reactive power factor according to the comparison result. The control strategy of the power compensator is revised;
E、人机交互模块分别将步骤C中逻辑分析模块做出的分类结果和步骤D中逻辑分析模块做出的对无功补偿器的控制策略进行显示，如果监控人员发现该控制策略出现错误，即通过人机交互模块手动修正对无功补偿器的控制策略。 E. The human-computer interaction module displays the classification results made by the logic analysis module in step C and the control strategy for the reactive power compensator made by the logic analysis module in step D. If the monitoring personnel find that the control strategy is wrong, That is, manually modify the control strategy of the reactive power compensator through the human-computer interaction module.
本发明的工作原理在于：本发明的电网无功补偿方法及系统可以对用户终端级、子网级和全网级的三级无功功率分别进行控制补偿，实现了电网各个层级的功率因数的提高。实验数据见下表： The working principle of the present invention is that the power grid reactive power compensation method and system of the present invention can control and compensate the three-level reactive power at the user terminal level, the sub-network level and the whole network level respectively, and realize the power factor of each level of the power grid. improve. The experimental data is shown in the table below:
①仅对用户终端级无功功率进行补偿 ①Only compensate the reactive power at the user terminal level
②仅对子网级无功功率进行补偿 ②Only compensate reactive power at sub-network level
③仅对全网级无功功率进行补偿 ③Only compensate reactive power at the whole network level
④对用户终端级、子网级和全网级的三级无功功率进行分别补偿 ④Respectively compensate the three-level reactive power at the user terminal level, sub-network level and whole network level
由上述四个表格中的实验数据可以看出，采用本发明的电网无功补偿方法及系统对用户终端级、子网级和全网级的三级无功功率进行分别补偿后，电网各个层级的功率因数都有了显著的提高。 From the experimental data in the above four tables, it can be seen that after using the grid reactive power compensation method and system of the present invention to separately compensate the three-level reactive power at the user terminal level, the sub-network level and the whole network level, each level of the power grid The power factor has been significantly improved.
此外，本发明将取样时间优选为1分钟，既兼顾了取样的时效性，又避免了无功补偿器频繁启停，延长了无功补偿器的使用寿命。反馈模块采用PID算法，使系统每次的调整时间缩短了1倍。并且，本发明根据电网不同层级的无功功率的特点，选取不同的无功补偿器，降低了设备资金的投入量。 In addition, in the present invention, the sampling time is preferably 1 minute, which not only takes into account the timeliness of sampling, but also avoids frequent start and stop of the reactive power compensator, and prolongs the service life of the reactive power compensator. The feedback module adopts PID algorithm, which shortens the adjustment time of the system by one time. Moreover, the present invention selects different reactive power compensators according to the characteristics of reactive power at different levels of the power grid, thereby reducing the investment in equipment funds.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510347950.6A CN104979836A (en) | 2015-06-23 | 2015-06-23 | Power grid reactive compensation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510347950.6A CN104979836A (en) | 2015-06-23 | 2015-06-23 | Power grid reactive compensation method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104979836A true CN104979836A (en) | 2015-10-14 |
Family
ID=54276074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510347950.6A Pending CN104979836A (en) | 2015-06-23 | 2015-06-23 | Power grid reactive compensation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104979836A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914750A (en) * | 2016-05-11 | 2016-08-31 | 广东电网有限责任公司汕头供电局 | Power distribution network low voltage variable coefficient control method and system |
| CN107910904A (en) * | 2017-11-23 | 2018-04-13 | 南京理工大学 | High voltage direct current synchronous capacitor starts grid-connection control system and its control method |
| CN108616130A (en) * | 2018-05-15 | 2018-10-02 | 山东大学 | The improved micro-capacitance sensor builtin voltage partition control method based on droop method control |
| CN108964135A (en) * | 2018-09-14 | 2018-12-07 | 东北大学 | A kind of micro-capacitance sensor distributed economic dispatch device and method considering communication delay |
| CN111668854A (en) * | 2020-05-18 | 2020-09-15 | 安徽徽电科技股份有限公司 | Compensation system for medium-high voltage power grid |
| CN112886605A (en) * | 2021-01-28 | 2021-06-01 | 广州安能特电气设备有限公司 | Reactive compensation method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA97005868A (en) * | 1995-02-01 | 2011-10-14 | Westinghouse Electric Corp | Dynamic power and voltage regulator for an ac transmission line. |
| CN202444273U (en) * | 2012-02-24 | 2012-09-19 | 深圳市英纳仕电气有限公司 | Hybrid reactive power compensation device |
| CN104022520A (en) * | 2014-06-20 | 2014-09-03 | 国网河北省电力公司衡水供电分公司 | Reactive power compensation device and method for power grid |
| CN104158196A (en) * | 2014-08-22 | 2014-11-19 | 成都迈硕电气有限公司 | SVG-based line voltage compensation method |
| CN104158197A (en) * | 2014-08-22 | 2014-11-19 | 成都迈硕电气有限公司 | SVG-based line voltage compensation method |
-
2015
- 2015-06-23 CN CN201510347950.6A patent/CN104979836A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA97005868A (en) * | 1995-02-01 | 2011-10-14 | Westinghouse Electric Corp | Dynamic power and voltage regulator for an ac transmission line. |
| CN202444273U (en) * | 2012-02-24 | 2012-09-19 | 深圳市英纳仕电气有限公司 | Hybrid reactive power compensation device |
| CN104022520A (en) * | 2014-06-20 | 2014-09-03 | 国网河北省电力公司衡水供电分公司 | Reactive power compensation device and method for power grid |
| CN104158196A (en) * | 2014-08-22 | 2014-11-19 | 成都迈硕电气有限公司 | SVG-based line voltage compensation method |
| CN104158197A (en) * | 2014-08-22 | 2014-11-19 | 成都迈硕电气有限公司 | SVG-based line voltage compensation method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914750A (en) * | 2016-05-11 | 2016-08-31 | 广东电网有限责任公司汕头供电局 | Power distribution network low voltage variable coefficient control method and system |
| CN105914750B (en) * | 2016-05-11 | 2018-05-15 | 广东电网有限责任公司汕头供电局 | Power distribution network low-voltage variable coefficient control method and system |
| CN107910904A (en) * | 2017-11-23 | 2018-04-13 | 南京理工大学 | High voltage direct current synchronous capacitor starts grid-connection control system and its control method |
| CN107910904B (en) * | 2017-11-23 | 2021-02-23 | 南京理工大学 | High-voltage DC synchronous camera start-up grid-connected control system and control method thereof |
| CN108616130A (en) * | 2018-05-15 | 2018-10-02 | 山东大学 | The improved micro-capacitance sensor builtin voltage partition control method based on droop method control |
| CN108616130B (en) * | 2018-05-15 | 2020-01-14 | 山东大学 | Improved microgrid internal voltage partition control method based on droop method control |
| CN108964135A (en) * | 2018-09-14 | 2018-12-07 | 东北大学 | A kind of micro-capacitance sensor distributed economic dispatch device and method considering communication delay |
| CN108964135B (en) * | 2018-09-14 | 2021-06-08 | 东北大学 | Micro-grid distributed economic dispatching device and method considering communication time lag |
| CN111668854A (en) * | 2020-05-18 | 2020-09-15 | 安徽徽电科技股份有限公司 | Compensation system for medium-high voltage power grid |
| CN112886605A (en) * | 2021-01-28 | 2021-06-01 | 广州安能特电气设备有限公司 | Reactive compensation method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104022520B (en) | A kind of reactive compensator of electrical network and method | |
| CN104979836A (en) | Power grid reactive compensation method and system | |
| CN105071406B (en) | Reactive compensation method based on distribution network load curve | |
| CN110011329A (en) | Low-voltage power distribution station area powerless control method containing distributed photovoltaic | |
| CN103606932B (en) | The low voltage dynamic reactive-power compensation capacitor autocontrol method that load is relevant | |
| CN111478306A (en) | A new strategy for suppressing voltage fluctuations of DC microgrids with composite energy storage | |
| CN110635510A (en) | Non-grid-connected wind power electrolysis water hydrogen production system and its coordinated control method | |
| CN105071399A (en) | Voltage and reactive power coordinated control system based on interaction and coordination of primary and distributed networks | |
| CN105490305A (en) | Distributed energy access system and power grid power factor improving method thereof | |
| Wang et al. | Voltage prevention and emergency coordinated control strategy for photovoltaic power plants considering reactive power allocation | |
| CN106786528A (en) | It is a kind of based on the Economical Operation of Main Transformer in Substation control method of D5000 systems and application | |
| CN105490279B (en) | A kind of local voltage control method of the distributed power source based on dichotomy | |
| CN205960661U (en) | System for electric automobile charging station active participation electric wire netting is adjusted | |
| CN106026070B (en) | Direct-current grid converter decoupling control method based on sagging control | |
| CN115796611A (en) | Building power distribution system energy efficiency assessment and promotion method, system and storage medium | |
| CN106410819B (en) | The receiving end power grid dynamic reactive power optimization method and device of the infeasible node containing voltage | |
| CN105490274B (en) | Electric power supply system for subway utility power quality control system and method | |
| Li et al. | Capacity configuration method of hybrid energy storage system for stand-alone photovoltaic generation system | |
| CN104362641A (en) | Method for configuring power distribution reactive and comprehensive control strategies and optimal capacity | |
| CN106532729B (en) | It saves ground and coordinates the method that control 220kV collects substation's high voltage bus voltage | |
| CN205544325U (en) | Distributing type energy access system | |
| CN102646983A (en) | A mid-to-long-term reactive voltage analysis and optimization method for power systems | |
| CN204441889U (en) | With the active filter of VSC circuit | |
| CN204376746U (en) | A kind of online pure sine wave exports solar energy inverter | |
| CN204096796U (en) | Elevator group controlling equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |